Method of making patterns for metal lasts



(No Model.) L

E; S. vK'IlIGSTOlI.v METHOD 0E MEETINGl PATTERNS EOE METAL LASTS.No.'299,650. Patented-June 8, 188A.v

EDWARD s. KINGSTON,

Arnim* Fries.

OF UTIOA, NEV YORK.

METH'OD OF MAKING PATTERNS FOR METAL LASTS.

SPECIFICATION forming part oi' Letters Patent No. 299,650, dated June 3,1884.

Application led August 18, 1883. (No model.)

To 1I/ZZ whom it may concern,

Be it known that I, EDWARD S. KINGSTON, a citizen of the United States,residing at Utica,

in the county of Oneida and State of New York,

have invented certain new and useful Improvements in Methods of MakingPatterns for Casting Shell Lasts; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, and toletters or gures of reference marked thereon, which form a part of thisspecification.

The object of my invention is to provide a cheap and practical method ofmaking patterns for casting metallic lasts, Awhereby they l can bemanufactured at a price low enough to allow them' to be generally used.

Heretofore iron lasts as manufactured have been either too heavy forgeneral use, or, if made light enough, the cost of manufacture has beentoo great; but by my method I am able to make iron shell lasts which arelight enough in weight and lowenough in price to successfully competewith wooden lasts. The method consists, essentially, in the followingsteps: first, in turning out a wooden last of the desired pattern, andin cutting out a transverse section of the wooden last extending' fromthe top nearly down to the toe, as hereinafter described; second, insevering from each other, near the toe, the instep and bottom blocksthus left, and hollowing them out t0 form shell-like patterns forcasting. After casting from the patterns thus formed the bottom andinstep plates are fitted together for use as last's. y

In the accompanying drawings, Figure l is awooden last to be used as apattern. Fig. 2 represents the same last when the section G has beenremoved. Figs. 3 and 4 are perspective views of the patterns for castingthe bottom and instep plates A and B. Fig. 5 is a vertical longitudinalsection through a finished iron last, the external contour of which willbe like the mutilated wooden last shown by Fig. 2.

Starting with the wooden last shown in Fig. 1, or a last made of anyequivalent material that can be turned and cut, `I saw out, by means ofa gig-saw or otherwise, the central portion, C, following the dottedlines a and b, leaving the last in the condition shown by Fig. 2,consisting of the bottom block, A, and instep-block B, attached only atthe-toe.

I have found that a last having open sides is just as serviceable as asolid last, for the upper-leather draws smooth and even from the loweredge of the instep-block B across the open space down to the bottom A. Itherefore construct my lasts with open sides, whereby I secure lightnessand economy of material, and am also able to make them collapsible. Theflange left around the edge of the bottomplate extending from the top ofthe heel downward along the shank and ball to the toe affords fullsupport to the heel or heelstiffener and to the edge of the upper alongthe edge of the sole, and the broad instep-plate B'gives the true shapeand curve to the instep, and does not distort the upper, as would a mererib, if used in place of the broad instep-plate, as has been proposed.The bottom and instep blocks are then severed on the dotted line D, andboth hollowed out, substantially as shown by Figs. 3 and 4, to be usedas patterns for casting. Ribs R may be left along the under side of theinstep-block for strength, and in fashioning the bottom block sockets inthe sole may be formed for the reception of cork-fillings to receive theinsole-nails,and lugs or flanges, projecting from the inside of thebottom for strength or for the attachment of the interior ittings of thelast, may be left as desired; but the conguration of ,both of thepatterns must be such that a casting can be taken from them withoutrequiring the use of a core. The toe is left as a portionof the bottomblock, and the line of separation is behind the toe, so that the contourof the toe is not broken. A serious defect in the last is thus avoided.It Will be 0bserved that the last narrows or tapers slightly from theline a down to the edge of the sole, and it likewise tapers at the heelfrom a line drawn around at the point a', in order that the pattern canbe easily withdrawn from the sand in the process of casting. Thecastings are tinned to give the last a smooth surface and to protect itfrom rust. The castings being thus made, I attach the interior ttingssubstantially as illustrated by Fig. 5, though these of course can bevaried in details, and any other equivalent devices may be substitutedfor those herein described, sonie of which may, if desired, be formed asparts of the castings, as above explained.

E is a hinge riveted to the bottoni and instep plates at the toe. F is apost riveted to the instep-plate at the instep, and riveted to thebottoni plate is a east-ing forming a forked standard, G, a socket, H,to receive the pin of the jack, and also the tool by means of which thelast is pulled out in the usual way, and a prong, I, against which theWooden or Cork plug l( abnts to prevent it from being; driven in. Theupper is nailed to the plug` K in the process of lasting, the hole forit being,` drilled after casting. A locking-pin, L, passing throughholes in the forked standard G and post F, holds the instep-plate in theproper position. Several holes may be provided for diil'erent heights ofthe instep, and the last is easily removed from the shoe when thelocking-pin L is withdrawn.. l

Having thus described iny invention, what I claim as new, is-

The method of vmaking patterns for shell lasts, herein described, whichconsists in eutting from a solid last the transverse section C, andhollowing out the separated sections of said lasts, so as to leaveflaring sides, in order that the shell-castings may be made Without theuse of cores, substantially as set forth.

In testimony whereof I afx my signature in presence of two witnesses.

EDVARD S. KINGSTON. \Vitnesses:

HENRY E. OWENS, llenarlo S. ),loonia.

